CurtPalme.com Home Theater Forum

[dvh99]

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ok a friend of mine has bought a marquee 9500 ultra (the 1 i wanted to buy).
i have been trying to get the tubes to focus but i cannot seem to get it right.
i also have been moving the focus coil forward and backward but still best focus is somewhere around 100.
can it be that the coil has been put in wrong into its assembly or is it something i have to change in the secret menu?
its a feb 2001 model.

[Nashou66]

hi Dvh99, is it Dave? I forgot. well.....

*First i assume you initialized the set to clear out all old memories and values.
*Also you made sure the glycol is clean with the lenses off.
*Disconnect the focus coils on each tube and look into the lens or with lenses off at about 20 contrast,
are the grids fairly clear or very blurry? they should be just about focused in the center sections, maybe all the way across if you have good magnets. if not slide the focus coil up and down the neck, no more than an inch should show a difference, set at best focus.
*now adjust focus to about 40-50 globally after connecting the coils.
*Go into the RGB focus service menu and adjust the focus for each color in all zones.
*Now go back and adjust global focus to best possible.
* I also forgot to tell you you make sure the astig coils are disconnected at start.


If during the RGB service mene adjustment you do not see any focus change you might have a bad focus board. if you see change but they wont focus well then you might have either a bad HVPS or a bad focus coil, if its all three not focusing well its the HVPS.
And check to see if they might have put a 34kv supply in, they do not focus the 9 inch tubes well. you need a 34.9kv.

Athanasios

[CZ Eddie]

Are you familiar with Marquee? Did you follow the internal Help guide for both mechanical & source setup?

[dvh99]

thanks for the very clear directions nashou.
to answer your questions.
yes i initialized the pj and removed all memories.
yes the glycol is very clear
i disconnected the focus coils and astig
i cannot get decent focus with moving the focus coil.
i wont go into zone focus if i havent got decent focussing to begin with.
the bad focussing is on all 3 tubes.
i will check tomorrow if the guy has put in a 34kv hvps and i will take my hvps to test in his pj as well as my focus module.
its dennis btw, and i am sorry about greece.

[Nashou66]

Dennis it is I'm more upset over the USA loss

Well I bet its the HVPS if the focus is bad with the FGM disconnected and since its on all three tubes.

Nothing else I can think of, but i'm really tired so my brain is half working.

Athanasios

[dvh99]

1 quick question remains.
did any 2001 marquees have a 34kv hvps.

[Nashou66]

Nope, but they might have used an old one if the 34.9 blew on them.

nashou

[dvh99]

serial number for the hvps.
part no: x2532
model ptv34.9p143x2532(vdc310-02)
vdc p/n 10-000310-02
serial: 0548m-1-5422

it seems like it is a 34.9kv but i guess it still isnt working well.

[cmjohnson]

I think you're looking in the wrong direction.


The focus yokes could quite easily have the wrong magnetic field strength value. Some of them (prior to VDC taking over) left the factory without being correctly calibrated.

I have a calibrated spare set of original (not frankenyoke) focus coils with astig, Thomson original type. I will provide these to you
on a one-for-one exchange basis. Take yours out. Put this set in. If they work for you, stick your set in the box and ship them
to me. I can then get them calibrated whenever I want to.


A bad HVPS is not likely. It's not impossible but generally they either work or they don't. An HVPS with low output is a pretty rare thing. But focus coils that have incorrect magnet strength are actually fairly common.


CJ

[dvh99]

chris thats an extremely nice gesture.
i am now about to go and test my hvps in his pj to rule that out and report about it later this evening.

dennis

[dvh99]

update, it is not the hvps so still no decent focus, although it was clear my hvps is a better performer after the cap upgrades .
i just cannot get the center to focus.
if i move the coil all the way forward i get best focus but nowhere near where it should be.
if i bring up the dot pattern it is very obvious, it shows that the dots are 2 to 3 times as big in the center as on the sides.
afterwards when focus is connected best focus is still at 100.

[mp20748]

Only an early version 8000/9000 series HVPS could cause focus problems. And when it does, it's because the HVPS is failing.

The later version 8110, 8500, 9500 series 34.9kv supplies would are not likely to cause focus problems, because focus problems caused from defective HVPS could only happen because the 34.9KV has lowered or dropped from 34.9kv. Which is not likely to happen because of it design difference from the earlier 8000/9000 series supplies that also include the strict Canadian Xray protection requirements, that also protect it from exceeding 34.9kv.

A later version HVPS would not start at all rather than put out a voltage less than or exceeding it's rated output.


Or to put it another way, it's 'Fail safe' circuits would shut it down first.

[dvh99]

well you learn something everyday, you could have told me that before mike, it would have saved me the trouble of swapping the hvps.
no just kidding i didnt mind thanks.

[Nashou66]

[dvh99]

yes you are right, i still intend to test my focus board.
i will test my focus board and my super clm 1 at a time tomorrow.

if its a series of bad coils or not well calibrated out of the factory it does make sense what cj says.

[dvh99]

ok focus board is bad tested it today, with my fgm focus was perfect at 45.
anyone have a spare focus board for sale?
i thought to get better focus with just the coils and no connection to the focus board.

[Curt Palme]

I can swap you an Ultra board, but I need the old one back. The Ultra boards are very hard to find.

[Curt Palme]

I can swap you an Ultra board, but I need the old one back. The Ultra boards are very hard to find.

[Nashou66]

[Curt Palme]

I don't think so, I've had focus coils disconnected in the Marquee from the board for hours while testing stuff with no issues. The output is just am amplifier, and with no coils attached, it's like disconnecting the speakers from a stereo amp.

[Curt Palme]

I don't think so, I've had focus coils disconnected in the Marquee from the board for hours while testing stuff with no issues. The output is just am amplifier, and with no coils attached, it's like disconnecting the speakers from a stereo amp.

[Nashou66]